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For communications and networking channels, coding techniques are widely used to correct errors in corrupted messages. The “Quality of Protection” (QoP) that can be provided via error correction directly affects the “Quality of Service” (QoS) experienced by users. The errors are commonly assumed to be substitution or erasure errors. Such systems rely on perfect synchronization so that no bit is deleted...
Recently, the notion of asymmetric group key agreement (ASGKA) was introduced, in which the group members merely negotiate a common encryption key which is accessible to any entity, but they hold respective secret decryption keys. In this paper, we propose an ASGKA protocol with traitor traceability. The new scheme achieves most of known security attributes, such as session key secrecy, known-key...
Cluster-based routing protocol is currently a hot research in wireless sensor network. In this paper, we propose an improved method RECHS(Redundant and Energy-efficient Clusterhead Selection) for LEACH protocol to balance network load and to extend the network life. In order to selecting reasonable clusterheads, our scheme first selects initial clusterheads and initial redundant clusterheads. By comparing...
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